Proposal to revise forest graph and integration practices for JDK 9

[Alan Bateman]

On 25/11/2013 01:47, David Holmes wrote:
>
> So this brings hotspot and tl (now dev) one step closer together. But 
> I'm unclear on the schedule for integration and testing ? I'm also 
> unclear on how eg hotspot-main PIT will work ie what forest will it 
> use for the rest of the JDK given that dev might not be stable at the 
> time of the PIT ?
>
I assume when you say "use for the rest of the JDK" that you are 
thinking partial builds (hotspot repo only in this case) but surely this 
has to change. That is, any testing of hotspot-main (or any hotspot 
forest) now needs to be done on a full build of hotspot-main and using 
the tests that are in the hotspot-main forest.

That said, I think the hotspot-main -> dev push will need consideration 
as it requires dev to be stable (for some definition of stable). Keeping 
dev stable at all times is probably the biggest challenge in this 
overall proposal. The closest thing we have to dev today is jdk8/tl and 
it is rarely stable, but neither is master (if "stable" is loosely 
defined to mean that all tests pass on all platforms in all configurations).

-Alan.